英语词组on the alert是什么意思，短语翻译、用法及例句-英语词组固定搭配大全

词组	on the alert
释义	on the alertadj. phr.Alert; watchful; careful. 警惕的；密切注意的；小心的。◆ Campers must be on the alert for poison ivy and poison oak.野营者必须密切注意气根毒藤和栎叶毒漆树。
随便看	climb the wall clinging vine clip joint clip sb.'s wings cloak-and-dagger clock in clock in or punch in clock out clock watcher close at hand close call close call or shave closed book closed-door close down close down or shut down closed shop close finish close in close its doors close-knit close one's eyes close one's eyes or shut one's eyes close on the heels close out

英语词组固定搭配大全包含9718条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。